One of my pullets (near point of lay) did not go in the coop when the lead hen called for all to bed. I was working on the coop, as it was free range time. I counted heads and noticed one white plymouth rock was not on the roost. I thought she was in the run. While I was finishing up with the stain, I saw her walking near the grow out pen. Being pokey. She was slow to come toward me so I walked up to her. Her left eye was closed. Right eye open. She didn't see me coming, and didn't fight me when I picker her up. Even though it startled her. She is solid white but her under feathers are completely full of dirt. First I thought maybe bugs, but it is dirt. I held her for about 15 minutes. She would occasionally open that eye. It wasn't red, wet, or any visible injury. No swelling. No squinting, or blinking. Just gently closed, with occasional open for a moment. I put her on her roost, and she turned herself around showing good balance, and cuddled up to a buddy. She doesn't seem distressed, but she was moving slow when I found her. Any chance she was just tired? Any advice would be much appreciated.